Beaten Wozniacki trying to stay positive in tough 2019

Caroline Wozniacki vowed to fight back and stay positive after her latest setback at the French Open.

Former world number one Wozniacki, a major champion in Melbourne just last year, was the 13th seed at Roland Garros amid a difficult season so far, having retired in the first round at both the Madrid Open and the Internazionali d'Italia.

The Dane was able to complete her opener on Court Philippe Chatrier on Monday, but the outcome was no more positive against Veronika Kudermetova.

Wozniacki looked to be on course to a comfortable win early on but collapsed to a 0-6 6-3 6-3 upset, later explaining to the media that a calf injury had disrupted her preparation on clay.

However, the 28-year-old was optimistic that she would now be able to build towards the grass season and Wimbledon.

"My calf now feels good, so that's a positive," she said. "And I'm definitely going to go back and just practice and work hard and get ready for the grass season.